CN201383431Y - Non-excitation tapping switch with contact isolating device - Google Patents
Non-excitation tapping switch with contact isolating device Download PDFInfo
- Publication number
- CN201383431Y CN201383431Y CN200920084017U CN200920084017U CN201383431Y CN 201383431 Y CN201383431 Y CN 201383431Y CN 200920084017 U CN200920084017 U CN 200920084017U CN 200920084017 U CN200920084017 U CN 200920084017U CN 201383431 Y CN201383431 Y CN 201383431Y
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- CN
- China
- Prior art keywords
- contact
- fixed contact
- insulator
- main coil
- tap
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- Expired - Fee Related
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Abstract
The utility model relates to a non-excitation tapping switch with a contact isolating device. The non-excitation tapping switch comprises an upper bearer and a lower bearer, wherein an insulator is connected between the upper bearer and the lower bearer in the circumferential direction, annular static contacts are arranged at intervals along the axial direction of the insulator, movable contact components are arranged between the upper bearer and the lower bearer and inside the annular static contacts, the movable contact components are connected with a vertical driving device, and movable contacts bridged with two adjacent static contacts are arranged on the periphery of the movable contact components and corresponding to the annular static contacts, and the annular static contacts comprise static contacts connected with the tap of a main coil and a static contact for outputting the contact. The non-excitation tapping switch is characterized in that an insulating isolating part is arranged between two adjacent static contacts connected with the tap of the main coil, namely in the neutral position of the switch. The non-excitation tapping switch can effectively prevent the movable contacts from being bridged with two adjacent static contacts connected with the tap of the main coil due to error operation, and further improve the safety and the reliability of the tapping switch; the structure is simple, the manufacture is convenient, and the cost is low.
Description
Technical field
The utility model relates to a kind of off circuit tap changer that is used for transformer, is specifically related to the off circuit tap changer of tool contact spacer assembly.
Background technology
Off circuit tap changer has been widely used in transformer output modulation and has pressed the field.A kind of excitation-free cage type tapping switch is disclosed in Chinese patent CN200944364Y, this switch is installed annular fixed contact along the axially spaced-apart of insulating bar, between upper and lower bearing, be provided with moving contact component with the annular fixed contact inboard, moving contact component and one up and down transmission device links, and the corresponding annular fixed contact of the periphery of moving contact component is installed on and the adjacent two fixed contacts moving contact of cross-over connection mutually.This construction of switch is applicable to the shunting switch of big electric current, and it realizes moving up and down of moving contact component by transmission device about the operating mechanism rotating drive, thereby changes the switch tap position.This switch is according to the shift of the variation realization shunting switch of dynamic and static contact contact gear, and wherein the moving contact cross-over connection constitutes a gear of switch between two adjacent fixed contacts.But on the fixed contact arrangement, also there is neutral position, transformer energising when if moving contact is in neutral position, will cause shunting switch and transformer short circuit burnout failure, realize for avoiding normally showing in the above-mentioned accident generation prior art by the gear in the tap change operation mechanism, but still also can cause the generation of above-mentioned accident owing to installation, operation, improper use, the hidden danger that has safety, for the power transformer that requires high operational reliability, this defective is restricted this switch application scope.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiency that above-mentioned prior art exists and the off circuit tap changer of the higher tool contact spacer assembly of a kind of operation and usage safety performance is provided.
The utility model is that the technical scheme that problem adopted of the above-mentioned proposition of solution is: comprise, undersetting 1,2, on, circumferentially be connected with insulator 3 between the undersetting, axially spaced-apart along insulator is installed annular fixed contact, last, between undersetting and annular fixed contact inboard is provided with moving contact component, moving contact component and one transmission device up and down links, the corresponding annular fixed contact of the periphery of moving contact component is installed on and the adjacent two fixed contacts moving contact 6 of cross-over connection mutually, described annular fixed contact comprises the fixed contact 4 that connects the main coil tap and the fixed contact 11 of output contact, it is characterized in that between the fixed contact of two adjacent connection main coil taps be that the switch neutral position is provided with insulator spacer.
Press such scheme, described insulator spacer is insulation shading ring 7, and the internal diameter of insulation shading ring is less than the internal diameter of annular fixed contact, installs on the insulator between the two adjacent fixed contacts that are connected in the main coil tap.
Press such scheme, described insulator 3 is the cage type insulator, is made of many insulating bars; Perhaps described insulator is an insulating cylinder.
Press such scheme, described insulator spacer is made by insulating material.
Press such scheme, described moving contact component comprises shell-like supporter 5, circumferentially is installed on strip moving contact 6 in the periphery of suit supporter, and the configuration spring.
Press such scheme, described transmission device up and down is made of the drive screw 8 and the swivel nut 13 that are connected between the undersetting, and swivel nut and supporter link, the inboard and directed guide rod phase configuration of supporter; The upper end of transmission device and operating mechanism 9 link up and down.Operating mechanism drives drive screw, drives moving contact axial displacement by moving up and down of swivel nut, realizes the tap position conversion.
The beneficial effects of the utility model are: 1. by insulator spacer is set, can effectively prevent moving contact since misoperation and with the two adjacent fixed contact that is connected in main coil tap cross-over connections mutually, avoided the mutual conduction of the two adjacent fixed contacts that are connected in the main coil tap, even therefore misoperation takes place also the coil short accident can not take place, thereby got rid of the potential safety hazard during switch uses, further improved the safety and reliability of shunting switch; 2. the utility model is simple in structure, easy to make, cost is low.
Description of drawings
Fig. 1 is the front view of an embodiment of the utility model.
Fig. 2 is the A-A cutaway view among Fig. 1.
Fig. 3 is the elementary diagram of an embodiment of the utility model.
Embodiment
Further specify embodiment of the present utility model below in conjunction with accompanying drawing.
An embodiment of the present utility model as shown in Figure 1, 2, 3, be the linear off circuit tap changers of transferring of single-phase 3 grades of cage types, have upper bracket 1, undersetting 2, upward circumferentially be installed on insulating bar between undersetting, insulating bar is the 6-8 root, constitute cage type insulator 3, the insulating bar inboard is furnished with annular fixed contact vertically at interval, annular fixed contact links by screw and each insulating bar, annular fixed contact is provided with 5 vertically, wherein 3 annular fixed contacts for connect the main coil tap 1. 2. 3. 4,2 of fixed contacts be the output contact
Fixed contact 11, the arranged outside of annular fixed contact has binding post 10, links with the transformer tap lead; Be provided with moving contact component corresponding to annular fixed contact, described moving contact component comprises shell-like supporter 5, periphery at the suit supporter circumferentially is installed on many strip moving contacts 6, the contact-making surface of strip moving contact is an arc surface, the back disposes the spring of radial effect, moving contact and two adjacent annular fixed contact cross-over connections mutually, the swivel nut about the supporter 5 of moving contact component and the screw in the transmission device links, and disposes two directed guide rods 12; Screw transmission device up and down is made of the drive screw 8 and the swivel nut 13 that are connected between the undersetting, the upper end links with operating mechanism 9, when operating mechanism drives drive screw 8 rotations, moving contact component will move up and down, also do radial floating in the gearshift procedure, thereby realize a plurality of tap position conversion.The tap of described connection main coil 1. 2. 3. fixed contact and output contact
The order installed at interval from top to bottom of fixed contact for 1.
2. 3.
It wherein 2. 3. is the fixed contact of two adjacent connection main coil taps, it is the switch neutral position, between the fixed contact of this two adjacent connection main coil tap, be provided with insulation shading ring 7, the internal diameter of insulation shading ring is less than the internal diameter of annular fixed contact, install on the cage type insulator 3 between the two adjacent fixed contacts that are connected in the main coil tap, moving contact 6 external diameter compression through herein the time is lifted, can not with two adjacent annular fixed contacts 4 short circuit mutually, the fixed contact that connects the main coil tap 2. 3. can not mutual conduction.
Claims (6)
1, a kind of off circuit tap changer of tool contact spacer assembly, comprise, undersetting, on, circumferentially be connected with insulator between the undersetting, axially spaced-apart along insulator is installed annular fixed contact, last, between undersetting and annular fixed contact inboard is provided with moving contact component, moving contact component and one transmission device up and down links, the corresponding annular fixed contact of the periphery of moving contact component is installed on and the adjacent two fixed contacts moving contact of cross-over connection mutually, described annular fixed contact comprises the fixed contact that connects the main coil tap and the fixed contact of output contact, it is characterized in that between the fixed contact of two adjacent connection main coil taps be that the switch neutral position is provided with insulator spacer.
2, press the off circuit tap changer of the described tool contact of claim 1 spacer assembly, it is characterized in that described insulator spacer is the insulation shading ring, the internal diameter of insulation shading ring is less than the internal diameter of annular fixed contact, installs on the insulator between the two adjacent fixed contacts that are connected in the main coil tap.
3, by the off circuit tap changer of claim 1 or 2 described tool contact spacer assemblys, it is characterized in that described insulator is the cage type insulator, is made of many insulating bars; Perhaps described insulator is an insulating cylinder.
4, by the off circuit tap changer of claim 1 or 2 described tool contact spacer assemblys, it is characterized in that described moving contact component comprises the shell-like supporter, circumferentially be installed on the strip moving contact in the periphery of suit supporter, and the configuration spring.
5, press the off circuit tap changer of claim 1 or 2 described tool contact spacer assemblys, it is characterized in that described transmission device up and down is made of the drive screw and the swivel nut that are connected between the undersetting, swivel nut and supporter link, the inboard and directed guide rod phase configuration of supporter; The upper end of transmission device and operating mechanism link up and down.
6, press the off circuit tap changer of the described tool contact of claim 2 spacer assembly, it is characterized in that being the linear off circuit tap changers of transferring of single-phase 3 grades of cage types, annular fixed contact is provided with 5 vertically, wherein 3 annular fixed contacts are for connecting 1. 2. 3. fixed contact of main coil tap, and 2 are the output contact
Fixed contact, the arranged outside of annular fixed contact has binding post, the tap of described connection main coil 1. 2. 3. fixed contact and output contact
The order installed at interval from top to bottom of fixed contact for 1.
2. 3.
Wherein 2. 3. be the fixed contact of two adjacent connection main coil taps, between the fixed contact of this two adjacent connection main coil tap, be provided with the insulation shading ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920084017U CN201383431Y (en) | 2009-03-06 | 2009-03-06 | Non-excitation tapping switch with contact isolating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920084017U CN201383431Y (en) | 2009-03-06 | 2009-03-06 | Non-excitation tapping switch with contact isolating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201383431Y true CN201383431Y (en) | 2010-01-13 |
Family
ID=41526903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920084017U Expired - Fee Related CN201383431Y (en) | 2009-03-06 | 2009-03-06 | Non-excitation tapping switch with contact isolating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201383431Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103493161A (en) * | 2011-04-04 | 2014-01-01 | Abb技术有限公司 | Tap changer |
| CN104995708A (en) * | 2012-12-03 | 2015-10-21 | J·侯 | Transformer tapping arrangement and methods of operation of same |
-
2009
- 2009-03-06 CN CN200920084017U patent/CN201383431Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103493161A (en) * | 2011-04-04 | 2014-01-01 | Abb技术有限公司 | Tap changer |
| CN103493161B (en) * | 2011-04-04 | 2015-12-02 | Abb技术有限公司 | Tap transducer |
| CN104995708A (en) * | 2012-12-03 | 2015-10-21 | J·侯 | Transformer tapping arrangement and methods of operation of same |
| CN104995708B (en) * | 2012-12-03 | 2018-08-17 | J·侯 | Transformer tapping device and its operating method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100113 Termination date: 20160306 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |